Answer: 9 graphing calculators and 41 scientific calculators were sold.
Step-by-step explanation:
Let be "g" the number of graphing calculators and "s" the numbe of scientific calculators.
Set up a system of equations:
[tex]\left \{ {{g+s=50} \atop {110g+16s=1,646}} \right.[/tex]
You can solve the system of equations using the Elimination Method. Multiply the first equation by -16, add the equations and then solve for "g":
[tex]\left \{ {{-16g-16s=-800} \atop {110g+16s=1,646}} \right.\\.........................\\94g=846\\\\g=\frac{846}{94}\\\\g=9[/tex]
Substitute the value of "g" into the first equation and solve for "s":
[tex]9+s=50\\\\s=50-9\\\\s=41[/tex]
